Boiler Tubes
Seamless Steel Tube and Pipe for Low / Medium Boiler
Generally, seamless steel tube and pipe is used for construction of heating pipelines, production of containers and transportation of steam in low and medium boilers. 10 steel or 20 steel are often adopted for production of the pipe. The working pressure of the steel is not greater than 5.88Mpa.
| Standards | Steel Grade | Chemical Composition (%) | Mechanical Properties | |||||||||
| C | Si | Mn | P.S | Cr | Cu | Ni | Mo.V | Tensile Strength (Mpa) | Y ield Strength (Mpa) | Elongation (%) | ||
| GB3087 | 10 | 0.07- 0.14 | 0.17- 0.37 | 0.35- 0.65 | ≤ 0.035 | ≤ 0.25 | ≤ 0.25 | ≤ 0.25 | / | 335- 475 | ≥ 195 | ≥ 24 |
| 20 | 0.07- 0.14 | 0.17- 0.37 | 0.35- 0.65 | ≤ 0.035 | ≤ 0.25 | ≤ 0.25 | ≤ 0.25 | / | 410- 550 | ≥ 245 | ≥ 20 | |
Seamless Steel Tube and Pipe for High Pressure Boiler
In high pressure boilers, seamless steel tube and pipe is mainly applied for construction of heating pipelines, production of containers and storage of coal. The steel used to make this tube can be 10 steel or 20 steel. Its working pressure should be higher than 9.8Mpa, while the working temperature is ranging from 450 to 650℃. Certainly, we are able to provide pipe made of other types of steel if required.
| Standards | Steel Grade | Chemical Composition (%) | Mechanical Properties | |||||||||
| C | Si | Mn | P | S | Cr | No | V | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | ||
| GB5310 | 20G | 0.17- 0.24 | 0.17- 0.37 | 0.35- 0.65 | ≤ 0.030 | ≤ 0.030 | / | / | / | 410-550 | ≥245 | ≥24 |
| 20MoG | 0.17- 0.24 | 0.17- 0.38 | 0.70- 1.00 | ≤ 0.030 | ≤ 0.030 | / | / | / | ≥415 | ≥240 | ≥22 | |
| 15MoG | 0.12- 0.20 | 0.17- 0.37 | 0.40- 0.80 | ≤ 0.030 | ≤ 0.030 | / | 0.25- 0.35 | / | 450-600 | ≥270 | ≥22 | |
| 15Cr1 MoG | 0.12- 0.18 | 0.17- 0.37 | 0.40- 0.70 | ≤ 0.030 | ≤ 0.030 | 0.80- 1.10 | 0.40- 0.55 | / | 440-640 | ≥235 | ≥21 | |
| 12Cr2 MoG | 0.08- 0.15 | ≤0.50 | 0.40- 0.70 | ≤ 0.030 | ≤ 0.030 | 2.00- 2.50 | 0.90- 1.20 | / | 450-600 | ≥280 | ≥20 | |
| 12Cr1 MoVG | 0.08- 0.15 | 0.17- 0.35 | 0.40- 0.70 | ≤ 0.030 | ≤ 0.030 | 0.90- 1.20 | 0.25- 0.35 | 0.15- 0.30 | 470-640 | ≥255 | ≥21 | |
